What would happen if the cell membrane were completely made of a polar substance A) the cell would stop all substances from entering
B) the cell would be unable to maintain a stable internal environment
C) the cell would need to use more facilitated diffusion
D) the cell would not be able to produce vacuoles
EASY POINTS

92 sathe best for the question 11. most animals and plants reproduce sexually. this means that dna is passed down to new organisms from two parental organisms. which of the following is a key advantage of sexual reproduction?

Match each description to the appropriate biome. tropical savanna desert tropical rain forest taiga tundra has sparse vegetation and very cold temperatures located near the equator and contains trees that form dense canopy layers is very hot and dry, and has plants that need little water has cold winters, heavy snowfall and is dominated by conifers has warm temperatures and is dominated by grasses

Explain why ecosystem diversity results in species diversity in a healthy biosphere